Applicator



Jan. 9, 1940. L. SCHLEICHER APPLICATOR Original Filed July 5, 1932 1: I A V Fill! IN VEN TOR. Z/IH/RE/VCE SCHLE/CHEE Mug) A TTORN E YS.

Patented Jan. 9, 1940 UNITED STATES PATENT OFFICE Substitute for abandoned application Serial No.

620,910, July 5, 1932.

This application June 5, 1934, Serial No. 729,147

6 Claims.

This application is a substitute for my abandoned application, Serial No. 620,910, filed July 5, 1932.

My invention relates to and has for a purpose the provision of an applicator structurally characterized in a manner to enable a charge or dose of a medicament, emollient, ointment or other substance in liquid, semi-liquid or other form to be ejected into an orifice of the body with the utmost ease'and dispatch.

It is a further purpose of the invention to provide an applicator which, in its association with a collapsible tube or other supply of the substance to be used, functions to eject one charge of the substance as another charge is forced into the applicator from the source of supply, all in amanner to enable an accurately measured dose to be readily given and adose stored in the applicator for use as desired.

Another purpose of "the invention is the provision of an applicator of the above described character including means by which a dose of the substance stored in the applicator can be temporarily sealed therein in a manner to be maintained in a clean state for subsequent use.

Only one form of the invention will now be described, following which its novel features will be pointed out in claims.

In the accompanying drawing:

Figure 1 is a view showing in longitudinal section the applicator empty, with the delivery end of a conventional collapsible tube connected thereto;

Figure 2 is a view similar to Figure 1, but showing a charge of the substance in the collapsible tube, forced into the applicator;

Figure 3 is a view similar to the preceding views, but showing a second charge forced into the applicator, with the charge shown in Figure 2 ejected from the applicator; and

Figure 4 is a longitudinal sectional View of the applicator showing a charge sealed therein for subsequent use.

Referring specifically to the drawing, wherein similar reference characters designate similar parts in each of the several views, this invention comprises an elongated body in the form of a cylindrical barrel B- constructed of glass or other suitable material and having either permanently or detachably secured to the ends thereof by threaded connections as shown, identical heads I0 and H, either of which is adapted to be inserted into an orifice of the body while the other has temporarily associated therewith a collapsible tube containing the medicament to be used.

The ends ofthe barrel are open and coact with ducts I2 and [3 in theheads I0 and II, respec tively, to provide axially disposed ports l4 and i5 opening into identically threaded bores l6 and H in the respective heads.

Reciprocably mounted in the barrel so as to have a sliding fit therein is a cylindrical charge ejector E, the opposite ends of which are reduced in diameter to provide extensions I9I9, one of which enters the duct l2 when the ejector occupies the extreme position shown in Figure 1, and the other of which enters the duct 13 when the ejector occupies the extreme position shown in Figure 2, all for the purpose of sealing the respective ports. The ejector is of a predeter-' mined length in accordance with the size of the charge or close which will correspond to the capacity of that portion of the chamber 2b of the body or barrel which is not occupied by the ejector.

The threaded bores l6 and I! enable the externally threaded neck 2| on the delivery end of a conventional collapsible tube 22 containing the desired substance for use, to be detachably connected to one end or the other of the barrel in communication with the respective port. However, it will be understood that the specific form of detachable connection provided will depend upon the particular source of supply from which the applicator is to be charged.

The operation of the applicator is as follows:

Assuming that the chamber of the barrel is empty as shown in Figure 1, the neck 2| of the collapsible tube 22 is first screwed into the bore l6 or I! of the respective head ID or I I so as to detachably secure the tube to the applicator, following which the tube is squeezed until a charge a of the substance contained in the tube is forced into the chamber; the incoming charge of course moving the ejector E in advance thereof to the extreme position shown in Figure 2, in which the ejector abuts the head I l and thus determines the size of the dose.

The applicator is now unscrewed from the tube 22, and the other head of the barrel attached to the tube as shown in Figure 3. The first mentioned head of the applicator can now be inserted into the orifice of the body for which the applicator has been designed, following which the tube is again squeezed until a second charge 11 of the substance in the tube is forced into the chamber 20, the charge 12 moving the ejector in advance thereof to the extreme position shown in Figure 3 and thus causing the ejector to eject can be in the form of elastic caps 23 of cup shape (Figure 4) and are adapted to be stretched over the outer rounded ends of the heads l and H, to thus maintain the stored charge or dose in a clean state for subsequent use.

I claim: 1

1. An applicator comprising a barrel having identical ported heads at its ends, either of which is capable of being inserted into an orifice of the human body; a piston fitted in the bore of the barrel between said heads; and threaded bores in the respective heads into either of which the threaded delivery neck of a collapsible tube can be screwed so as to enable a charge from a supply of material in the tube to be forced through one head into the barrel while a charge previously introduced into the barrel through the other head is ejected therefrom into the orifice of the body by the piston as the tube is squeezed.

2. A medicament applicator comprising a coaxial tube, having a bore provided with co-axial orificed ends, either of which is formed for releasable connection with a medicament container 85 from which medicament can be forced into the bore; and a piston fitted in the tube for movement by a charge of medicament admitted to the bore from one orificed end thereof and for ejecting from said one end the charge thus admitted when the container is removed from said end and connected with the opposite said end and the container actuated to admit a charge to the bore to replace the charge being ejected.

3. A medicament applicator comprising a tube having a medicament bore opening onto the respective ends of the tube, the tube formed for free alternate insertion of said respective ends into and removal thereof from an opening of the body, said ends being each formed for releasable association with the outlet end of a medicament container; and a piston fitting the bore and adapted to move from one end thereof to the other to enable a charge of medicament to be admitted to the bore to occupy the space therein at one side of the piston While forcing the piston in a direction to cause ejection from the bore at the opposite side of the piston of a previously admitted charge of said medicament.

4. A medicament applicator comprising a tube having a bore the ends of which are each formed for releasable connection with a container of a type to both admit medicament to the bore and discharge same therefrom; a piston fitted in the bore to move from one end thereof to the other and between one end of the piston and one end of the bore, a charge of medicament can be contained; and means for closing the ends of the bore to seal said charge of medicament in the bore.

5. A medicament applicator comprising a tube having a bore the ends of which are formed for releasable association with a container of a type to admit medicament to the bore and discharge same therefrom; and a piston fitted in the bore to be advanced in one direction or the other by and according as a charge of medicament is admitted to one end or the other of the bore, and to discharge a previously admitted charge of medicament from the oppositeend of the bore.

6. An applicator tube of the class described having a floating piston in its bore, abutments in the bore at opposite limits of movement of the piston, said tube being open at each end, and means at each end for selective attachment to a collapsible container.

LAWRENCE SCHLEICHER. 

